An investigation of the use of a Halbach array in MW level permanent magnet synchronous generators

This paper reports on the use of a Halbach array in megawatt level permanent magnet synchronous generators (PMSGs) for wind turbine applications. Conclusions derived from the machine's linear approximation are applied here on the cylindrical PMSGs. An analytical model is used to model the machine's performance when a Halbach and a conventional array are considered. The Halbach array displayed superior fundamental flux density after design manipulation through the analytical equations. Finite Element Analysis simulation has been used to verify the analytical equations and findings. Discussion of the results is provided and future research direction is briefly described at the end of the paper.